We all agree that pets cheer us up when we're feeling sad [1], but can they also tell when we're ill?!

Beamish, this Rottweiler, did just that when his increased attention to a mole convinced Chris Tuffrey to get it checked out [2]. The pooch kept nuzzling, licking, and trying to lift his owner's arm and it turns out the mole was a melanoma . . . and needed to be removed.

There have been other cases and claims in which animals have reacted differently around illness [3] and evidence that they can detect cancer, predict epileptic seizures, and more. What do you think – would unusual behavior from your dog cause you to visit a doc?

Source [4]